fix:小组件- PUSH

client/src/services/__tests__/legalApi.test.ts

@@ -0,0 +1,39 @@
+import { describe, expect, it } from 'vitest';
+
+import i18n from 'i18next';
+
+import { buildAcceptLanguage } from '../legalApi';
+
+describe('legalApi.buildAcceptLanguage', () => {
+  function setLang(lang: string) {
+    Object.defineProperty(i18n, 'language', {
+      value: lang,
+      configurable: true,
+    });
+  }
+
+  it('非中文语言回退为 en', () => {
+    setLang('en');
+    expect(buildAcceptLanguage()).toBe('en');
+
+    setLang('es');
+    expect(buildAcceptLanguage()).toBe('en');
+  });
+
+  it('任意 zh* 归一为 tc', () => {
+    setLang('zh-CN');
+    expect(buildAcceptLanguage()).toBe('tc');
+
+    setLang('zh-TW');
+    expect(buildAcceptLanguage()).toBe('tc');
+  });
+
+  it('显式 tc / hant 等归一为 tc', () => {
+    setLang('tc');
+    expect(buildAcceptLanguage()).toBe('tc');
+
+    setLang('zh-Hant');
+    expect(buildAcceptLanguage()).toBe('tc');
+  });
+});
+